[UIMA-4773] UIMA DUCC: JP throws BindException on startup if port is not available

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.1.0-Ducc
• Component/s: DUCC
• Assignee: Jaroslaw Cwiklik
• Reporter: Jaroslaw Cwiklik
• Created: 28/Jan/16 18:39
• Updated: 17/Mar/16 15:07
• Resolved: 17/Mar/16 15:07

Description

On startup a JP throws
java.net.BindException: Address already in use

A JP starts a Camel route on a socket to listen for agent STOP requests. This route can fail if a socket port is not available.
Change Agent to send SIGTERM signal to JP to force an orderly shutdown instead of sending a STOP request over a dedicated socket channel. with this change, the JP no longer needs to create a Camel route over socket listener. Instead it just needs to catch the SIGTERM signal, quiesce and stop.
The Agent will send SIGKILL (-9) to a process that refuses to stop for SIGTERM.